In game you do it at the screen where you select your character and equipment - the ability descriptions are listed where it says level 1 2 3 and 4. The reason for this is because in "Non Codex Mode" you don't start with all abilities unlocked - and instead unlock them as you play.

In game you do it at the screen where you select your character and equipment - the ability descriptions are listed where it says level 1 2 3 and 4. The reason for this is because in "Non Codex Mode" you don't start with all abilities unlocked - and instead unlock them as you play.